Perhaps you should try some spelling variations:
waste sampling » case sampling, data sampling, same sampling
sampling data » sample data
german gender » german lander, germany under, german border
human gene » human genome, human gender, human bone
bank bern » bank btn
bern hong » bern von
hong 7 » hong w, hong a, hong g

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: waste sampling data ((((human gene) or (german gender))) or (human beings)) bank bern hong 7 ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: waste sampling data ((((human gene) OR (german gender))) OR (human beings)) bank bern hong 7 ;.
• Adding a wildcard symbol may retrieve word variants: waste sampling data ((((human gene) or (german gender))) or (human beings)) bank bern hong 7 ;*.